strerror - return string describing error code
SYNOPSIS
#include <string.h>
char *strerror(int errnum);
DESCRIPTION
The strerror() function returns a string describing the
error code passed in the argument errnum. The string can
only be used until the next call to strerror().
RETURN VALUE
The strerror() function returns the appropriate descrip
tion string, or an unknown error message if the error code
is unknown.
CONFORMING TO
SVID 3, POSIX, BSD 4.3, ISO 9899
SEE ALSO
errno(3), perror(3), strsignal(3)
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